A can do a piece of work in 9 days and B
can do a piece of work in 12 days respectively. If they work only on alternate
days, then how many days will it take for the work to get completed?
Showing posts with label scholarship. Show all posts
Showing posts with label scholarship. Show all posts
Saturday, August 3, 2013
15-chain rule / time and work
If 10 workers can dig a trench 23/4 feet long in one day, then how many workers will be required to dig a trench 23 feet long in 3 days time?
10-chain rule / time and work
A student hostel has 280 students. It has
ration for 20 days. 40 students leave for home on Christmas after 8 days of
staying together. How many days will the ration last?
9- chain rule / time and work
3 men or 5 boys can do a piece of work in
30 days. In how many days will 5 boys and 12 men do the job?
chain rule
In a hostel, ration for 2000 students is
sufficient for 54 days. After 15 days some more people join in and the ration
lasted for only 20 more days. How many people joined in later?
chain rule
48 men working 4 hours a day can complete
the work in 10 days. How many men will be required to complete the work in 6
days, working 10 hours a day?
chain rule / unitary method
40 girls can make 30 boxes in 20 days. How many more girls
should be employed to prepare 60 boxes in 25 days?
Chain rule / unitary method
If 12 books cost Rs 80 what will be the cost of 30 books?
(alternate to unitary method)
Friday, August 2, 2013
distance and speed
Two men ride towards each other from two places 80 km apart, one at 18 km/hr and the other at 14 km/hr. Find when they are first 16 km apart. Also find when they will be16 km apart for the second time.
simple equation
A's age is equal to the sum of the ages of B and C. Ten years ago A was twice as old as B. Show that 10 years hence A will be twice as old as C.
simple equations
A man's age is 3 times the sum of the ages of his two sons, one of whom is twice as old as the other; in 12 years the sum of the son's ages will be three fourth of their father's age. Find the age of the father.
series
Fill in the missing numbers:
1,2,6, 24, -------
Answer:
1 2 6 24 -----
1x
2 1x2x3 1x2x3x4 1x2x3x4x5
Therefore, answer = 120
series
Fill in the missing numbers:
5,11, 17,----33, 43
Answer:
5 11 17 ---- 33 43
(5 + 17) / 2 = 11 (11+ x)/2 = 17 (23 + 43)/2 = 33
x
= 23
Therefore, 23
Answerseries
Fill in the missing numbers:
1,2,6,24,-----
Answer:
1 2 6 24 ----
1x2 2x3 6x4 24x5
Therefore, 24 x 5 =
120 Answer
series
Fill in the missing numbers:
2,7, --------, 23, 34, 47
Answer:
2 7 ----- 23 34 47
5 7 9 11 13
(47 – 34)
Therefore, 7 + 7 = 14 Answer
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